Zobrazeno 1 - 10
of 19
pro vyhledávání: '"I. P. Dolgovesova"'
Publikováno v:
Physics of the Solid State. 62:2412-2421
Solid solutions Gd2(1 – x)TbxEuxO3 (where x = 1 and 2.5 mol %) are prepared by the sol–gel method with subsequent annealing at 700–1200°C in air and hydrogen atmospheres. It is found by XRD and IR spectroscopy that the solutions undergo the ch
Autor:
I. V. Korol’kov, S. I. Kozhemyachenko, Olga V. Antonova, T. D. Pivovarova, I. P. Dolgovesova, V. V. Bakovets
Publikováno v:
Russian Journal of General Chemistry. 88:992-999
Sol-gel synthesis of the (GdxY1–x)2O3: Eu3+ solid solutions (3.5 mol %) allows for the increase in the energy efficiency of emission of the red luminophor. The study of distribution of the luminescence activator Eu3+ has revealed that these ions su
Publikováno v:
Russian Journal of General Chemistry. 86:224-230
Evolution of the mother liquor pH in the course of the sol-gel precipitation of hydrogels of yttrium and europium oxohydroxides has been studied at different acidity of the system and the precipitant (NaOH) concentration. The optimal pH and component
Autor:
I. V. Korol’kov, Olga V. Antonova, T. D. Pivovarova, M.I. Rakhmanova, S. V. Belaya, I. P. Dolgovesova, V. V. Bakovets
Publikováno v:
Journal of Luminescence. 215:116633
Publikováno v:
Physics of the Solid State. 56:2496-2506
Samples of the Y2O3 : Eu3+ (5–11 at %) phosphor with a high luminescence efficiency have been synthesized by the sol-gel method. The chemical, substructural, and optical properties of the material have been investigated using the thermal analysis,
Autor:
L. N. Trushnikova, Pavel E. Plyusnin, S. A. Savintseva, Ilya V. Korolkov, T. D. Pivovarova, V. V. Bakovets, I. P. Dolgovesova
Publikováno v:
Russian Journal of General Chemistry. 83:1808-1814
The process of dehydration of Gd(OH)3·nH2O obtained by the sol-gel method from a solution of Gd(NO3)3, to Gd2O3 in the temperature range of 50–700°C was explored. The hydrogel and Gd2O3 structurization is shown to depend on the additives (AF-12 a
Autor:
T. D. Pivovarova, Pavel E. Plyusnin, I. V. Korol’kov, N. I. Alferova, I. P. Dolgovesova, L. N. Trushnikova, V. V. Bakovets
Publikováno v:
Russian Journal of General Chemistry. 83:1-9
The sol-gel method of the formation of the nanostructured luminophor based on Y2O3 doped by Eu3+ and Bi3+ was studied. The mechanism of the dehydration and dehydroxylation of gels and xerogels of the mixed hydroxides, particle sizes, structure, and l
Publikováno v:
Russian Journal of Inorganic Chemistry. 55:1897-1902
The hydrogen reduction of bis(2,4-pentanedionato)copper(II) sorbed by the cavitand cucurbit[8]uril has been studied. After sorption of the complex at 180°C, the crystal structure of the resulting phase differs from the structure of the individual co
Autor:
V. V. Bakovets, S. B. Érenburg, T. V. Mit’kina, S. V. Trubina, V. A. Nadolinnyi, I. P. Dolgovesova
Publikováno v:
Journal of Surface Investigation. X-ray, Synchrotron and Neutron Techniques. 4:658-661
This work describes EXAFS and EPR studies of inclusion compounds of the trans-[Cu(en)2(H2O)2]2+ complex in the macrocyclic cavitand CB[8] at different stages of heat treatment in the hydrogen atmosphere in a temperature range of 200–330°C. The str
Autor:
Pavel E. Plyusnin, V. V. Bakovets, Ilya V. Korolkov, L. N. Trushnikova, I. P. Dolgovesova, S. A. Savintseva, T. D. Pivovarova
Publikováno v:
Russian Journal of General Chemistry. 80:1115-1121
A processes of formation of nanostructured powders of nickel oxide by annealing in the temperature range of 200–700°C of the nickel hydroxide obtained by the sol-gel method at 80°C from solutions of nickel nitrate by precipitation with alkali in